Any drug used to combat oesophageal reflux[?]. Commonly, following ingestion a 'raft' of alginic acid is created, floating on the stomach contents by carbon dioxide released by the drug. This forms a mechanical barrier to further reflux. Some preparations also contain antacids to protect the oesophagus.
... stick). Gameplay is very challenging and rewarding, and once the player has gotten through a level there are bonuses to collect, record times to beat, and a gold star ...